SB20261022304 - Use-after-free in Linux kernel mac80211

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20261022304

SB20261022304 - Use-after-free in Linux kernel mac80211

Published: October 22, 2026

Security Bulletin ID SB20261022304
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-98699)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially cause a denial of service through access to freed kernel memory.

The vulnerability exists due to a use-after-free in the Linux kernel mac80211 mesh fast transmit cache when mesh path deletion races with cache entry insertion. A local user can potentially trigger concurrent mesh path deletion and cache insertion to leave a cache entry referencing a freed mesh_path object, which may cause a kernel crash when accessed.


Remediation

Install update from vendor's website.

References